18657891

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5807}}^1$

素因数の和:5840

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 14796189

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 5807, 17421, 40649, 52263, 98719, 121947, 156789, 296157, 365841, 691033, 888471, 1097523, 2073099, 2665413, 6219297, 18657891]

約数ペア:

[(1, 18657891), (3, 6219297), (7, 2665413), (9, 2073099), (17, 1097523), (21, 888471), (27, 691033), (51, 365841), (63, 296157), (119, 156789), (153, 121947), (189, 98719), (357, 52263), (459, 40649), (1071, 17421), (3213, 5807)]